20663742304 has 24 divisors (see below), whose sum is σ = 41254729488. Its totient is φ = 10186350720.

The previous prime is 20663742251. The next prime is 20663742311. The reversal of 20663742304 is 40324736602.

It is a super-2 number, since 2×20663742304² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4545207 + ... + 4549750.

It is an arithmetic number, because the mean of its divisors is an integer number (1718947062).

Almost surely, 2^20663742304 is an apocalyptic number.

It is an amenable number.

20663742304 is a deficient number, since it is larger than the sum of its proper divisors (20590987184).

20663742304 is an equidigital number, since it uses as much as digits as its factorization.

20663742304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9095038 (or 9095030 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 37.

The spelling of 20663742304 in words is "twenty billion, six hundred sixty-three million, seven hundred forty-two thousand, three hundred four".